[amd64] Fix acpi signature checking

2019-09-17 15:50:14 +03:00
parent ec6005054d
commit df5803ed69
1 changed files with 5 additions and 1 deletions
@@ -52,6 +52,11 @@ static int acpi_rsdp_read(const struct acpi_rsdp *rsdp) {
        for (size_t j = 0; j < ACPI_TABLE_TYPE_COUNT; ++j) {
            if (!strncmp(header->signature, acpi_table_type_name[j], 4)) {
                kdebug("%u: %s @ %p\n", i, acpi_table_type_name[j], header);
+
+                if (acpi_checksum(header, header->length)) {
+                    panic("RSDT contains invalid table: %s\n", acpi_table_type_name[j]);
+                }
+
                acpi_tables[j] = (uintptr_t) header;
                continue;
            }
@@ -121,7 +126,6 @@ int acpi_tables_init(void) {
            return -1;
        }
    }
-    // TODO: FADT does not validate on qemu, neither have I tested ACPI > 1.0

    // Extract HPET
    if (acpi_tables[ACPI_HPET] != MM_NADDR) {